It will be difficult to figure out if she is or isn't the same as some other morph. If you have any males from the blue eyed leucistic complex you could start breeding that to her and see if she is even compatible (i.e. if she produces a similar looking white snake to what a Vin Russo het would have produced from the same pairing). If it still looks like she could be the same at that point it gets harder to be sure. Watch to see if her offspring look consistently the same or a little different from the Vin Russo's. Even to this day there isn't universal agreement if butter and lesser are exactly the same or just similar and compatible.